Of the study subjects, 5,038 (10.8%) developed psychiatric disorders when compared to 9,376 (6.7%) in the control group, with significant difference (p < 0.001). Fine and Gray’s competing risk model analysis revealed that the adjusted HR was 1.659 (95% CI = 1.602–1.717, p < 0.001). In this study, we found that the groups of atopic dermatitis alone and the allergic rhinitis + atopic dermatitis were associated with a lower risk of psychiatric disorders, but all the other four groups, such as bronchial asthma alone, allergic rhinitis alone, bronchial asthma + allergic rhinitis, bronchial asthma + atopic dermatitis, and the combination of all these three allergic diseases, were associated with a higher risk of psychiatric disorders.

According to the U.S. Centers for Disease Control and Prevention, each year approximately 16 million individuals in the United States have a major depressive episode. Conventional pharmacological treatments are estimated to produce temporary remission in less than 50 percent of patients, and they are often associated with severe adverse effects. Thus, there is an urgent need for a wider spectrum of novel therapeutics.
Depression is associated with a multitude of pathological processes, including inflammation of the peripheral immune system, a set of biological structures and processes in the lymph nodes and other tissues that protect against disease and abnormalities involving synapses, the structures that permit neurons to pass an electrical or chemical signal to other neurons. However, currently available antidepressants are largely restricted to targeting the systems that regulate serotonin, dopamine, and other related neurotransmitters, and these treatments do not specifically address inflammation and synaptic maladaptations that are now known to be associated with MDD.
Previous research has found that grape-derived polyphenols have some efficacy in modulating aspects of depression, yet the mechanisms of action had largely remained unknown until now. The new study, led by Giulio Maria Pasinetti, PhD, Saunders Professor of Neurology, and a team of investigators from the Center for Integrative Molecular Neuroresilience at the Icahn School of Medicine at Mount Sinai, found that a bioactive dietary polyphenol preparation -- a combination of three grape-derived polyphenol products, including a select Concord grape juice, a select grape seed extract, and trans-resveratrol -- was effective in promoting resilience against stress-induced depression in mice.
Specifically, researchers found that DHCA and Mal-gluc can promote resilience in mouse models of depression by modulating inflammation and synaptic plasticity, respectively. DHCA reduces interleukin 6 (IL-6), a pro-inflammatory substance secreted by T cells and macrophages to stimulate immune response, by epigenetically modulating the non-coding sequence of the IL-6 gene. Mal-gluc modulates histone acetylation of the Rac1 gene and allows transcription activators to access the DNA for increased transcription in the brain, which influences the expression of genes responsible for synaptic plasticity. Researchers also demonstrated that DHCA/Mal-gluc treatment was effective in attenuating depression-like phenotypes in a mouse model of increased systemic inflammation induced by transplantation of cells from the bone marrow of stress-susceptible mice.

Fasting mitigates immediate hypersensitivity: a pivotal role of endogenous D-beta-hydroxybutyrate

The results of the present study demonstrates that fasting suppress hypersensitivity reaction, and indicate that increased level of D-beta-hydroxybutyrate by fasting plays an important role, via the stabilization of mast cells, in suppression of hypersensitivity reaction.

Food allergies linked to childhood anxiety -- ScienceDaily

Among the children with a food allergy, 57 percent reported having symptoms of anxiety compared to 48 percent of children without a food allergy. Approximately 48 percent of the children had symptoms of depression with or without a food allergy.
"Management of food allergy can be expensive both in terms of food shopping, meal preparation, and the cost of epinephrine auto-injectors, which expire annually," said Renee Goodwin, PhD, in the Department of Epidemiology at the Mailman School of Public Health and lead author. "These demands could result in higher levels of anxiety for those with fewer financial resources and further heighten anxiety symptoms in children and their caregivers."
The results suggest that food allergy is particularly linked to elevated social anxiety and fear of social rejection and humiliation.

They developed dissolvable nanoparticles out of an FDA-approved polymer, and then filled them with egg protein, before injecting them into mice that were allergic to eggs.
Usually, these mice would develop an asthma-like response, but because the egg protein was safely stored inside the friend-looking nanoparticles, their bodies didn't react.
Even better, the nanoparticles were then cleaned up by macrophages, which are tasked with 'vacuuming up' any debris in the blood stream. And these macrophages are part of the innate immune system, which meant that the allergens were then processed as normal.
"The vacuum-cleaner cell presents the allergen or antigen to the immune system in a way that says, 'No worries, this belongs here,'" said Miller. The immune system then shuts down its attack on that allergen, and gets reset to normal.

"The atypical psychosis syndromes arising from the development of anti-NMDA receptor antibodies are extremely important to diagnosis and treat," commented Dr. John Krystal, Editor of Biological Psychiatry. "They may be easily misdiagnosed as the psychiatric disorders that they superficially resemble.. Nonetheless, these syndromes highlight the importance of NMDA receptor signaling for the genesis of symptoms associated with psychotic disorders."

Is depression a kind of allergic reaction?

Both cytokines and inflammation have been shown to rocket during depressive episodes, and – in people with bipolar – to drop off in periods of remission. Healthy people can also be temporarily put into a depressed, anxious state when given a vaccine that causes a spike in inflammation. Brain imaging studies of people injected with a typhoid vaccine found that this might be down to changes in the parts of the brain that process reward and punishment.
There are other clues, too: people with inflammatory diseases such as rheumatoid arthritis tend to suffer more than average with depression; cancer patients given a drug called interferon alpha, which boosts their inflammatory response to help fight the cancer, often become depressed as a side-effect.

Lactobacillus might sound familiar when the topic of probiotics comes up, but they are only one of many types of bacteria that have proven health benefits. In a new study by the Academy for Immunology and Microbiology within the Institute for Basic Science (IBS) and the National Institute of Animal Science research project of Rural Development Administration, researchers have shown that the introduction of the probiotic Bifidobacterium longum KACC 91563 has the ability to reduce the effects of food allergies.

Infection with roundworm (Ascaris lumbricoides) is associated with earlier first births and shortened interbirth intervals, whereas infection with hookworm is associated with delayed first pregnancy and extended interbirth intervals. Thus, helminths may have important effects on human fertility that reflect physiological and immunological consequences of infection.